Exposure to nitrogen oxides NOx and sulfur dioxide SO2 in polluted air can have significant negative effects on human respiratory health. These pollutants are mainly produced by burning fossil fuels, such as in power plants, industrial processes, and vehicle emissions.1. Inflammation and irritation: NOx and SO2 can irritate and inflame the lining of the respiratory system, including the nose, throat, and lungs. This can lead to symptoms such as coughing, wheezing, shortness of breath, and chest tightness.2. Aggravation of existing respiratory conditions: Exposure to these pollutants can worsen pre-existing respiratory conditions, such as asthma and chronic obstructive pulmonary disease COPD . This can result in more frequent and severe asthma attacks or COPD exacerbations.3. Increased susceptibility to infections: Inflammation and irritation caused by NOx and SO2 can damage the respiratory system's natural defenses, making it more susceptible to infections such as bronchitis and pneumonia.4. Reduced lung function: Long-term exposure to these pollutants can lead to a decline in lung function, making it harder for individuals to breathe and participate in physical activities.5. Development of respiratory diseases: Chronic exposure to NOx and SO2 has been linked to the development of respiratory diseases, such as bronchitis, emphysema, and lung cancer.6. Impacts on vulnerable populations: Children, the elderly, and individuals with pre-existing respiratory conditions are more susceptible to the harmful effects of NOx and SO2 exposure. Children are particularly vulnerable because their lungs are still developing, and exposure to these pollutants can result in long-term damage.In summary, exposure to nitrogen oxides and sulfur dioxide in polluted air can have a range of negative effects on respiratory health, from irritation and inflammation to the development of chronic respiratory diseases. Reducing emissions of these pollutants is essential for protecting public health, particularly for vulnerable populations.